Question # 1

The minimum charge on any object can not be less than

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1.6 x 10^-19C

3.2 x 10^-19C

1.0 C

4.8 x 10^-19C

Rate of diffusion is

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Faster in solids than in liquids and gases

Faster in liquids than in solids and gases

Equal to solids, liquids and gases

Faster in gases than in liquids and solids

When the conductor moved across a magnetic field:

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Emf induced is similar to that of a battery

Emf induced gives rise to induced current

An emf induced across its ends

All are correct

None of these

The waves which propagate out in space due to oscillation of electric and magnetic fields are known as

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e.m. waves

mechanical waves

sound waves

water waves

The number of countries who manage the largest satellite system is:

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3

24

126

200

The time period of a simple pendulum is independent of its:

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Length

Mass

Value of g

Both A and B

The path described by a projectile is called its

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orbit

trajectory

range

distance

If 42 J heat is transferred to the system and the work done by the system is 32 J then what will be the change in internal energy

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0 J

2 J

5 J

10 J

SHM is type of ______ motion

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Vibratory

Linear

Circular

None

γ-rays are

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electrostatic waves

electromagnetic waves

heavy particles

longitudinal waves

There are some whose resistivity becomes zero below a certain temperature, called

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absolute zero

0°C

critical temperature

lower fixed point

The path (or trajectory) described by a projectile is

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a parabola

a hyperbola

a circle

a straight line

If source and observer are moving towards each other with same speed and aftercrossing they are receding each other then frequency observed by observer:

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Decreases

Remains constant

Increases

First Increases then decreases

Which of the following quantity is dimensionless?

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Gravitational constant

Plank's constant

Power of lens and gas constant

None of these

If a gymnast sitting on a rotating table with his arms out stretched suddenly lowers his hands

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The angular velocity decreases

The moment of inertia decreases

The angular velocity remains constant

The angular momentum increases

In a astronomical telescope the final image for normal vision is formed at

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The focal of the eye piece

The least distance of the distinct vision

The focus of the objective lens

Infinity

A unit vector may be defined by the

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Surface

Direction by normal drawn vector

Along the direction of surface

a and b

The young s modulus for a perfectly rigid body is

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Zero

1

Infinite

None of these

Basic part or parts of a heat engine

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Source

Sink

Working substance

All of these

In the thin film, the path difference between the two reflecting waves depends upon

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thickness of film

nature of film

angle of incidence

all of them

A typical rocket ejects the burnt gases at speeds over

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400 ms^-1

40000 ms^-1

40000m s^-1

60000 ms^-1

Who devise the experimental arrangement in 1801 for studying interference effects of light

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Huygen

Young

Newton

None of these

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